404 - Not Found

When run the traccar projects in netbeans nd I have the following issue:
http://localhost:8082 returns just “404 – not found”

cd /home/anoop/NetBeansProjects/traccar; JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64 /home/anoop/.netbeans/8.1/maven/bin/mvn "-Dexec.args=-classpath %classpath org.traccar.Main debug.xml" -Dexec.executable=/usr/lib/jvm/java-8-openjdk-amd64/bin/java org.codehaus.mojo:exec-maven-plugin:1.2.1:exec
Running NetBeans Compile On Save execution. Phase execution is skipped and output directories of dependency projects (with Compile on Save turned on) will be used instead of their jar artifacts.
Scanning for projects...
                                                                        

Building traccar 3.9-SNAPSHOT

--- exec-maven-plugin:1.2.1:exec (default-cli) @ traccar ---
[main] INFO com.zaxxer.hikari.HikariDataSource - HikariPool-1 - Started.
INFO 2/10/17 10:51 PM: liquibase: Clearing database change log checksums
INFO 2/10/17 10:51 PM: liquibase: Successfully acquired change log lock
INFO 2/10/17 10:51 PM: liquibase: Successfully released change log lock
INFO 2/10/17 10:51 PM: liquibase: Successfully acquired change log lock
INFO 2/10/17 10:52 PM: liquibase: Reading from PUBLIC.DATABASECHANGELOG
INFO 2/10/17 10:52 PM: liquibase: Reading from PUBLIC.DATABASECHANGELOG
INFO 2/10/17 10:52 PM: liquibase: ./schema/changelog-master.xml: changelog-3.8::changelog-3.8-dropuniquetoken::author: Change set changelog-3.8::changelog-3.8-dropuniquetoken::author failed, but failOnError was false. Error: Constraint "UK_USER_TOKEN" not found; SQL statement:
ALTER TABLE PUBLIC.users DROP CONSTRAINT uk_user_token [90057-193] [Failed SQL: ALTER TABLE PUBLIC.users DROP CONSTRAINT uk_user_token]
INFO 2/10/17 10:52 PM: liquibase: Successfully released change log lock
[main] INFO org.eclipse.jetty.util.log - Logging initialized @13862ms
[main] INFO org.eclipse.jetty.server.Server - jetty-9.2.19.v20160908
[main] INFO org.eclipse.jetty.server.handler.ContextHandler - Started o.e.j.s.ServletContextHandler@17a703f5{/api,null,AVAILABLE}
[main] INFO org.eclipse.jetty.server.handler.ContextHandler - Started o.e.j.s.ServletContextHandler@54f4a7f0{/console,null,AVAILABLE}
[main] INFO org.eclipse.jetty.server.ServerConnector - Started ServerConnector@9f93629{HTTP/1.1}{0.0.0.0:8082}
[main] INFO org.eclipse.jetty.server.Server - Started @19443ms

Usually it means that you haven't downloaded "traccar-web" code.